If they will make code harder to read, that's up to syntax. I don't know how all that will look up on the end, but it should be reasonably easy to just write an example.
do you mean templates?
i was under the impression that c++ generics == templates, but after a google search found out that c++ has both (at least according to microsoft), not surprised
https://docs.microsoft.com/en-us/cpp/extensions/generics-and...
It is an extremely niche language, extremely rarely used even in the .NET ecosystem, except sometimes as glue code.
Normal C++, including MSVC C++, has only templates.
This is the kind of tooling that makes me still reach out for C++ when going outside managed languages.
I also found a pretty ugly bug in the C++/CLR compiler - if you used in-place initialization for an array (something like auto arr = Object[]{obj1}), it would allocate an array of length 0xC0FFEE and set the elements you specified. They acknowledged the bug but said they will only fix it in a future version of the language.
This told me all I needed to know about how popular it actually was.
P/Invoke can only do so much if a C++ library doesn't provide a C ABI, and WinDev loves to publish COM based APIs since they won the Longhorn dispute.